Assembling, forming, and setting mechanism.



No. 756,837. PATENTED APR.12, 1904.

w. P. DBVINE. ASSEMBLING, FORMING, AND SETTING MECHANISM. PPPPPPPPPPPPPPPPP 0V.16, 1900.

N 0 M 0 D E L.

III

UNTTED STATES Patented April 12, 1904.

PATENT EEicE.

IVILLIAM P. DEVINE, OF BOSTON, MASSACHUSETTS, ASSIGNOR TO THE CONSOLIDATED FASTENER COMPANY, OF PORTLAND, MAINE.

ASSEMBLING, FORMING, AND SETTING MECHANISM.

SPECIFICATION forming part of Letters Patent No. 756,837, dated April 12, 1904.

Application filed November 16, 1900. Serial No. 36,725. (No model.)

Q0 [bZZ whom it 711.107 concern.-

Be it known that I, IVILLIAM P. DEVINE, a citizen of the United States, residing at Boston, in the county of Suifolk and Commonwealth of Massachusetts, have invented a new and useful Improvement in Assembling, Forming, and Setting Mechanisms, of which the following is a full specification.

My invention relates to mechanisms for assembling, forming, and setting snap-fasteners wherein simultaneously several of the male or female members are attached, two parts being applied to each other with the material of the article to which the fastener is attached interposed, the material being compressed between the metal parts and becoming substantially incorporated with the fastener.

I have discovered that to properly set on material-fasteners of the character referred to it is necessary that the material be smooth and stretched to a certain extent. I have therefore devised a mechanism that presents, holds, and stretches the material and at the same time attaches two or more fasteners. I utilize, in fact, the setting-dies to in part accomplish this end.

My improvement consists in the spring-actuated stock-holding perforated plates provided with two or more sets of dies, as hereinafter described.

Referring to the drawings, Figure l is a vertical section of my improved mechanism, showing the parts of the fastener and the material before the operation of assembling, forming, and setting is commenced. Fig. 2 shows the same at the completion of the operation.

In the drawings, A is the plunger, and B the bed, of a machine to which my mechanism is applied. The plunger A has the enlarged end a, which is drilled to receive the shanks c of the dies C, the shanks first passing through the plate D. The plate E slips over the enlarged ends of the dies C C and slides thereon, being urged outward by the spring F, but having its motion limited bythe screw G, as shown by the drawings.

It will be seen that the whole mechanism,

which I will call X, consisting of the plates D and E, dies C C, spring F, and screw G, may be withdrawn intact as a unitary structure by" loosening the shanks c in the plunger A, and when removed another mechanism with difl 'erent dies C C may be inserted, the parts of the removed mechanism retaining their relative positions, so that after the several parts forming each mechanism have been once adjusted to proper positions relative to each other they need not be changed, although removed and replaced as the requirements of the work to be done necessitate.

The mechanism holding the lower dies Y is composed of the plates H and I, dies K K, spring J, and screw L and may be withdrawn bodily from the bed B of the machine.

The fastener which I have shown with my improved mechanism consists of the parts M and N, and the material is shown as O. These two parts, in conjunction with each other and with the material, form the socket member of a fastener. The parts M are placed in the upper dies and the parts N in the lower dies, and the material is held between them. As the dies are brought together the plates E and H first come together on the material O and grip it firmly. As the pressure continues the upper and lower plates E and Hretreat on the dies C C and K K, respectively, and against the actions of the respective springs F and J. By the time the upper dies have come together sufficiently to close the two parts of the fastener together with the material between them the material on all sides of the openings in the plates E and H, through which the dies eX- tend, is firmly held with considerable pressure between the upper and lower plates, and thus the material, owing to the relatively large opposing surfaces of the plates E and H, is stretched only in the circle the size of the dies, so that puckering or wrinkling of the goods around the fastener is prevented. It will be readily understood that the moving of the plunger toward the base serves to assemble the members M and N, the complete movement serving to set the members and form the complete fastener.

With my improved mechanism I save the time of the operator, in addition to the fact that the fasteners are perfectly attached without wrinkling the material.

I claim- 1. In assembling, forming and setting mechanism, the combination of the two spring-actuated stock-gripping perforated plates, with a plurality of fastener-setting dies, said plates normally projecting beyond the plane of the face of the dies, said plates and dies operating in opposition to each other, the plates being yieldable relatively to the dies.

2. In assembling, forming and setting mechanism, the combination of the two spring-actuated stock-gripping perforated plates, with a plurality of fastener-setting dies, said plates normally projecting beyond the plane of the face of the dies, said plates and dies operating in opposition to each other, the plates being yieldable relatively to the dies, means being provided for holding the plate against removal independently of the dies operating therewith.

3. In assembling, forming and setting mechanism,the combination of the spring grippingplate E and the spring gripping-plate H, said plates having flat opposing surfaces, with the dies 0 C, K K, means being provided for holding the plates against removal independently of the dies operating therewith, whereby the normal relative positions of the dies and plate of the respective sides will be maintained when being removed.

4. In assembling, forming and setting mechanism, a die-holder having a yielding perforated gripping-plate, and a plurality of dies removably carried by said holder and adapted to be extended through said plate, said holder having means for maintaining the plate against removal independently of the dies, whereby the normal relative positions of the dies and plate will be maintained when being removed.

5. In assembling, forming and setting mechanism, the combination of duplicate opposing die-holders, each having a springactuated stock-gripping perforated plate, and complemental dies carried by the holders and adapted to operate through the perforations of the plates, means being provided for holding the plate against removal independently of the dies operating therewith, whereby the normal relative positions of the dies and plate of the respective sides will be maintained when being removed.

In testimony whereofI have signed my name to this specification, inthe presence of two subscribing witnesses, on this 22d day of September, A. D. 1900.

' 1 WILLIAM P. DEVINE. Witnesses:

WM. B. H. DOWSE, A. H. FLANNERY. 

